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Finding the Fourth Proportional to 71,858.84, 107,783.24 and 26,871.63

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Solution

The fourth proportional to 71,858.84, 107,783.24 and 26,871.63 is: 40,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,858.84 : 107,783.24 = 26,871.63 : x
  2. Step 2: Convert to fraction form
    71,858.84/107,783.24 = 26,871.63/x
  3. Step 3: Cross multiply
    71,858.84x = 107,783.24 × 26,871.63
  4. Step 4: Simplify right side
    71,858.84x = 2,896,311,211.12
  5. Step 5: Solve for x
    x = 2,896,311,211.12/71,858.84
  6. Step 6: Final answer
    x = 40,305.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.